Borderou de evaluare (job #329943)

Compilare: user.c: In function ‘check’: user.c:12:9: warning: unused variable ‘j’ [-Wunused-variable] user.c: In function ‘read_and_solve’: user.c:27:12: warning: unused variable ‘k’ [-Wunused-variable] user.c:27:9: warning: unused variable ‘j’ [-Wunused-variable] user.c: In function ‘main’: user.c:42:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] user.c:43:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] user.c:45:7: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] user.c: In function ‘read_and_solve’: user.c:29:7: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] user.c:30:31: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]